Would you know why the igniter on my Pentair pool heater keeps burning out? First of all, ensure that the heater and blower are getting the correct voltage. Hi Lance, those are good ideas, first lets think about flow rate. Submit a Support Request. You May Like: Bud Light Ugly Sweater Seltzer 2021. When this happens, the front panel buttons will stop working. Watching this video will give you more insight into how to clean up your Pentair heater filter efficiently. Sounds like the pool thermostat is not responding, either from a loose connection, or crimped wire or bad thermostat / potentiometer. Replace with new igniter. This issue should be checked ASAP. The control board is the culprit when there is no click. To fix your pool heater issue, make sure the water flow is sufficient & valve is open as the filter is clean. in 1995. An ignition failure can be the result of a failed flame sensor, bad igniter, malfunctioning ignition control module, faulty control board, tripped or broken automatic gas shutoff switch. Ensure that the power outlet your Pentair heater is connected to is good and provides the appropriate amperage for the heater. The thermal regulator should be in fine working condition. Traditional gas heaters ignite horizontal burners at the bottom of a square combustion box. I have a Master Temp 400 pool heater it does not turn on. Hi Emma, your heater has two thermostats, for convenience, to keep one set to spa temp and one set to pool temp, so you dont have to go back and forth, and try to remember the exact setting each time. },
I know I can buy for much less through you guys or elsewhere online. Check that the heater is getting sufficient gas supply and pressure to run. Take a closer look at where the water originates. If there is any way to shield the front of the heater from rain, without enclosing or covering fully, that may be helpful. People often confuse or term this leakage as sweating. Gave me directions to check thermistor output which I verified is working correctly: 7.7K ohms for 89 degree water. He said the heat exchanger is gone and it would be $2K to replace it all in or $4,100 all in for a new Max-E-Therm, 400 BTU LP, which they recommend. },
Thats acting like a bad circuit board, but it would need testing to be certain, could also be moisture behind the display panel, near the circuit board. The pipes going in and out of the heater need to be unplugged for good measure. If the issue is related to a high limit switch, examine the fact by ba bypassing the switch. Manuals; Brands; Pentair Manuals; Swimming Pool Heater; MasterTemp 400; . Be sure all connections are clean and tight. I have a Pentair Mastertemp 250 pool heater. Call Us Nationwide: 1-800-741-9956. . Email Us. They said the 126 display was an error code. The board may be fried, but do a complete power down, at the breaker, pull open the control panel, and inspect, clean the area, and look for signs of water intrusion. I do not have it connected to a spa. Thoughts? Thanks for your help! Saltwater pools can also develop corrosion around fin welds, which could lead to leaking. This should not be a cause for concern, though. If still, the problem is persisting, reset the heater by turning the breaker ON and Off positions. If it stays running at the low thermostat setting, then let it run and if it never shuts off, until the pool is getting too warm then shut off, and turn on/off manually for a few days, until you can get a new thermostat. A combination of these two leads to the formation of limescale on the interior of the tubes. Traveler, food lover, interior designer, and blogger. Please help. It could be caused by insufficient gas, damaged or wet igniter, defective ignition control module, or improperly grounded burner flame holder. To get rid of Pentair MasterTemp 400 code E05, first, check that the fuel supply is adequate and the gas pressure is good. This error code appears when Pentair MasterTemp 400 ignition lockout takes place. "primaryImageOfPage": {
Check out the other heating elements. Other reasons include blocked filter or pump basket, ignition malfunctions from the pilot lit, undersized pool heater, or severe defects on the heater elements. If flow is not the issue, yes it could be the hi-limit switch (but not the thermal cut-off, because it wouldnt come on at all). Ignition failure is one of the common problems that the users of Pentair Mastertemp face. Hi Davy I live in Maine, so very short pool season. Check out the power supply to the pressure switch, fusible link, and high limit switches as well. A sparking igniter is in good working condition. They have a have an SF code for Sensor Failure. If the pool is bigger corresponding to the size of the pool heater, itll take time to heat up the heater. Something mild to someone might be too hot or too cold for another. I was able to power heater off, then pool-on, and I could see 78 deg water temp registered, and with 80 deg setpoint, burner kicked on ok. 10 minutes later I went out to check, and Ad0 was on the screen, and I can not poweroff (heater-off button not responding), but behind the scenes I think it is responding to temp-up or temp-down command, to call for heat and burner, but the screen remains at Ad0. This error code should not be shown on your Pentair heater at this point. Installing a pool heater is not simple, but is done DIY all the time. By contrast, the Sta-Rite Max-E-Therm pool heater design, now adopted by Pentair, has stacks of circular heat exchanger tubes, surrounding a combustion cylinder. Check the wire going to the sensor and the sensor itself. . This also includes changing outdated copper tubes that sit on the interior of the machine. Same issue continues. Thank you Frank Possible Cause: Gas supply valve. I run the heater and this time it did something different. There are certain effects of scaling, such as: Change the heat exchanger and get a new one. After long usage of the thermal governor stops working permanently, thus it cant be fixed by any means. Check out the pressure sensor, thermal regulator, or high limit switch. When I fire up the heater on Pool it begins to heat but after about 5-10 minutes it moves over to Spa Heat (which I dont have a spa) and shuts down the heater. Ensure that the burner flame holder is grounded properly. All Rights Reserved. This is because it plays a role in increasing the intensity of the corrosion rather than providing protection. Then i see a R9 code. Solution: Replace the thermal governor with a new one. So I thought that was causing the problem. We will do our best to help. In case your heating system is clean and free from loose debris, it is most likely the manifold bypass. Replace the bad ones. If the supply valve is OFF, turn it ON. There is nothing, but you have to replace it to fix the leaking issue. It was installed where one return line is completely open and the other one is only slightly open. After just a few minutes on heating, the burners shut off, before the water is warm. It cycles for a bit then I hear a click either it fires off or it doesnt. Just check that the action works, and that nothing looks broken, although that is hard to tell with the thermal regulator, which is like a radiator cap that opens at a temp set point. Safe operation is assured through a series of features . Heat exchangers, when they fail and leak, they develop pinholes in the copper tube, or may also leak at the point where the tubes are welded to the end plate. The burner is located in the center of the combustion chamber, wrapped by the circular copper heat exchanger tubes. Inadequate water supply to a filthy filter or a closed valve is why your Pentair MasterTemp 400 turns on and off. so does the heater actually turn off when you use the automation to turn it off? It 'rattles' 3 times, doesn't fire up, then the SERVICE HEATER light comes on. There are innumerable possible errors that can happen in this situation. My Pentair 250 heater will not stay on the pool setting. The exhaust pipe is leaking water. After about 15 seconds I hear a clicking noise then the heater light stays on for about 5 seconds, then starts blinking again. Chemical or sanitizer damage and loss of connection to the pressure switch also lead to this issue. It does this over and over . Note: when the opened the manifold last winter to replace the bypass, the manifold and the heat coils have no signs of scales. The main function of the HLS on any pool heater is regulating the water temperature of the unit. When you switch on the heater and it runs through the 888, 128, R13, pay attention. Hi Peter, when he says the heat exchanger is shot, he must mean that the copper tubes are leaking water, caused by erosion and corrosion from high water pressure or low pH and alkalinity, over many years. You could also take the heat exchanger for servicing. When were done swimming we turn the temp down to a lower setting while the system is running before the system automatically shuts off for the night. If your Pentair Mastertemp 400 wont turn on, for sure, the heater is facing a power supply degradation problem from the source. Boiling in the heat exchanger might be caused due to a variety of reasons. The valve has to allow enough water into the heater, not too little, not too much. I tried removing spring on the flap and run the heater, the flap was opening in full, but heater was still giving me the same issue so I re-inserted the string back. Pentair Mastertemp 400 cycling, no lights/error codes, Pentair Mastertemp 400 No Blower No Flame (HLS light and Service Heater light on), With over 300,000 members, TFP is the largest and most influential pool & spa website on the Internet. Pentair Mastertemp 400 Knocking Noise. Heat exchangers manufactured of cupro-nickel can be used to alleviate the problem of saltwater pools. I have replaced the Stack sensor thinking that it was the problem. 2. Burner pulsates or surges, especially on ignition. Heater will not start. Defective Keypad Membrane. Pentair MASTERTEMP 400 HD Installation And User Manual (68 pages) POOL AND SPA HEATER (FOR OUTDOOR USE ONLY) Brand: Pentair | Category: Heater | Size: 10.86 MB. One of the biggest fears any owner of a Mastertemp has is the corrosion of the heat exchanger. 34. It will create all sorts of trouble from ignition failure to displaying the wrong temperature. "@type": "Organization",
Pentair MasterTemp pool heater parts are arranged into 3 parts buckets Burner System parts,Electrical System parts, andWater System parts. service system & service heater lights are off heater set p read more If it doesnt work, contact the Pentair customer support center. Save my name, email, and website in this browser for the next time I comment. Cupro Nickelheat exchangers can be used for much greater resistance to the effects of salt water corrosion. A leaking heat exchanger is a serious situation. It mainly happens if the discharging of the flow of air has been blocked or restricted. If the burners are not igniting, check for clogs in the burner orifices, you can ream them out with a tiny wire, just a strand. Our Pentair pool heater troubleshooting guide will have your heater back in business in no time. I let it run and the temp slowly went up from 74 to 77 in just an hour without stopping. If it fires off everything works fine a few minutes then shuts off.Ideas?Filter is clean. 38. Check out the power of the transformer whether its all good or not. It sits in a pool shed, with decent, not great ventilation. Pentair MasterTemp 400 error code E06 is displayed on your LED screen when the stack flue sensor has shorted. Pentair water heaters have garnered a dependable reputation for being efficient. Looking like might be bad control board? We and our partners use cookies to Store and/or access information on a device. So, was going to need to be replaced at some point. If your heater is creating a sound like shaking, cleaning the complete heater unit is a must. Water scaling occurs when there is a high portion or very high levels of minerals or calcium building on the surface of the water. I connected my old termistor and got a reading of 85 degrees. Ensure that the control board is dry. Still have the power light lit but no other lights are lit. Ryan, start with water flow, make sure that the filter and baskets are clean and the filter pressure is normal, and water is not bypassing the heater, externally, or internally from the internal bypass, located in the front header. I sent the following on May 23, but received no reply/advice. To get to the burner inside the heater, open it up. Would this be caused by too high of a gas/air mixture? spa light is on. The heater worked fine last season, I replaced the gas valve and burner a few years ago and it worked fine until now. For a better experience, please enable JavaScript in your browser before proceeding. Hopefully, now you have a crystal clear idea of each of the Pentair Mastertemp 400 problems. They will help you out with replacing your control board. Step 4: Now take the new ICM and put it in the Junction Box chamber. The solution to your heater issue is given in your previous comment. It doesnt sound like the heater is even trying to kick on. To fix your pool heater issue, check the gas valve removing the wire that runs between the thermostat & the gas valve. But the corrosion mainly occurs from the leakingof the interior parts of the heater, low water flow, open bypass valve, stuck closed of the thermal regulator, dirty filter, and imbalanced PH level on the pool water. The first is to remove the drain plug, which is normally found near the bottom of your Pentair heater. Clean the clogged water filter to ensure a fluent water flow. You will need to reset your heater to get it out of the lockout. You are welcome! "name": "In The Swim",
By unlocking the manual relief valve on top of the Clean & Clear Plus filter, I would bleed air out of it. "contentUrl": "https://x1.adis.ws/v1/media/graphics/i/lesl/its-logo-wide",
Replace the bad thermistor. To Turn off Gas to Appliance. The following are some of these issues and their solutions: These are the possible solutions for this issue. I only found 1 small stone stuck inside where the bypass is. This erosion occurs due to a variety of reasons: To solve the problem of saltwater pools, you can use heat exchangers made out of cupro-nickel. I replaced the thermistor and still have the same problem. If the thermistor tests are bad or faulty, replace them with a new one. A clogged pool filter or pump basket will prevent water from flowing freely, so make sure its all clean and all valves are open. Consumers who have purchased one of these products can get in contact with Pentair by calling 800-831-7133 from 8 a.m. to 7:30 p.m. Required fields are marked *. Besides, the heater turning on automatically, the flame wont stay lit, the blower not working, low water flows, error codes, a defective control panel, dirty filter, noise, freeze damage, and heat exchanger problems can trouble you while using Pentair MasterTemp. Replace the bad igniter and defective flame sensor from your heater. "logo": {
Again, if it is displaying a lower temperature, the heater may keep heating even if the water is hot enough. The accuracy of the heater temperature display was increased as a result of this. Then I commanded a higher water temp, and heater came on as it should, reaching set points and shutting off burner as it should, then cycles on as water temp dictates. The flame ignitor is firing but no gas flow. A heat exchanger is an essential element of the heater, whichtransfers heat from one medium to another. The next day I powered pool-on and it registered the correct water temp.
It has a big role in controlling the heater operation. I look forward to your advice. Also could possibly have circuit board problems. Use a heat exchanger made of cupro-nickel to resist corrosion. Step 3: Two mounting screws hold the ICM in place. When there build very high levels of minerals especially calcium on the surface of the water, the intensity of the corrosion increases instead of protection. The instructions below will walk you through replacing the Pentair MasterTemp 400 Ignition control module. Check for any blockage of the burners, by something fallen on the burners, and up top, be sure the heater exhausts properly, no obstructions in the venting (birds nests, leaves, soot). If the thermistor is in good condition, then replace the circuit board. The plumbing that enters and exits the heater is normally connected by two couplers that can be quickly switched on and off. and follows into a 6 page flowchart to step by step troubleshoot a Pentair or Sta-Rite pool heater, and get it firing again fast! The possibility of water chemistry issues like calcium buildup in the heat exchanger, low water flow, and faulty pressure switch can create strange sounds in your heater.To solve this sound issue, check through the below solutions. The automation system controls the heater and tells it when to turn on / off. Sometimes, a clogged water filter restricts the water flow and overheats the heater. Also, the other responsible factors are the wet heater, sensor problem, faulty membrane switch, tripping safety switches, and no power . How do you test a Pentair stack flue sensor? }
. Make sure that the filter of the heater is cleaned as well. Why is my Pentair pool heater not coming on? The same is true for the StaRite Maxetherm heaters. Copyright 2022 In The Swim. Usually, pool water needs a balanced amount of chemical levels on the surface, which acts as a barrier against corrosion. Make sure temperature setting is above water temperature. Check for wet or damaged igniter with low resistance to ground. Maintenance goes a long way when it comes to heater shelf life. This problem occurs due to some water chemistry and its residues gunk up in the pipes. Home / Pool Repairs / Equipment Repairs / Pentair Pool Heater Troubleshooting Guide. Thermal Governors stop working primarily due to years of usage. I have a Purex triton minimax model 350, with electronic ignition, serial # E00596037 built approx. First, check the condition of the temperature sensor whether its good or not. Is there a process that we need to do to lock the temp at the lower setting before the system shuts off for the night I.e., when we lower the temp do we need to touch the select button? "@type": "ImageObject",
Follow the below instructions to resolvePentair Mastertemp 400 keeps shutting off and on issue: Knocking sounds occurs due to the clogging in the skimmer or the strainer basket of the pump or the pool. Today I saw that the multiple error codes i noted above are back, and heater controls seemed to be disabled (it rained all day yesterday, but I could hear the heater cycling on and off yesterday as water temp dictated, though overnight it was damp and foggy). Hi Hugh, is it a Hayward heater? Normally you can smell a little gas when it kicks on but it does nothing. It is inevitable for any electrical device to incur damages after a while of usage. Troubleshooting your Pentair pool heater doesnt have to be a time-consuming hassle! So far I have replaced the thermal regulator, igniter, thermistor and the bypass valve in the manifold. Replace the defective thermistor. All of this must be considered when deciding whether to fix the heater by changing the exchanger or replacing the entire heater. When I hold it, the temp slowly went up to 90. No code is present. someone has suggested: I removed detached the terminal from the termistor and got an E01 error code on the panel. No, you cannot. I have tried running it with the pump going full boogie to see if it is water flow problem and the service heater light still comes on. Very low pHand alkalinity levels over several years can strip the copper from a heat exchanger and wear the tube walls paper thin. The Mastertemp 400 requires a voltage of 24 VAC. Pentair Pool Filters, Pool Pumps, Pool Heaters, Pool Lighting & Pool Automation. Replace the bad switches. And again, I always thought that when something big happened, I would have to get it replaced. You only have to make sure that the burner is okay. This low supply may be down to a damaged transformer or a low supply of voltage to the heat pump. Measure the voltage of the heater transformer. Close the external bypass if open. cause the heater's pressure switch to turn OFF. "mainEntityOfPage": "https://blog.intheswim.com/pentair-pool-heater-troubleshooting-guide/",
The reason is simple: TFPC (Trouble Free Pool Care) is a methodology, not a product that you must purchase. Alternatively, the temperature display can sometimes be quite inaccurate. Test your fill water too. A clogged filter or pump basket can build resistance to water flow to a degree that your heater cant operate as usual. MasterTemp is engineered for super-quiet operation and won't intrude on your poolside leisure time. All Right Reserved by HeaterFixLab. Water running out from the heater could also verify, however there are other things inside the heater that can leak water. The Pool company said that it is probably condensation. It continuously bounces between pool and spa. You can clean your own pool filter easily. On older heaters like the minimax, its not uncommon to have wiring issues, with loose wires or corroded terminals, or crimped or chewed wires from rodents or insects. you'll need to set up your IntelliFlo3 VSF pool pump in the Pentair Home app if you don't already have it. "@context": "https://schema.org/",
Troubleshooting the stacked exchanger type of heater is not much different than other electronic or digital pool heaters. Pentair Mastertemp 400 Heat Exchanger Corrosion, 9. Change the waters chemicals to achieve equilibrium. Here are the video links. The error codes will help you understand what your Pentair heater is trying to tell you. But when the amount exceeds the limit, the heater catches it as a problem. Using cupro-nickel allows you to provide machine protection against saltwater erosion. },
Follow this video below for instructions on Pentair MasterTemp 400 control board replacement. Tech did everything but change the Regulator. Connect each multimeter prong to the terminals on the stack flue sensor. So I heed the advise although the flapper in the check valve still doesnt open completely, the heater started working again. Heat exchangers can corrode due to pinhole leaks on copper tubes, saltwater, lack of alkalinity, and low pH levels. Lower gas supply, blocked filter, defective gas valves, gas supply valves, or plumber valves are highly responsible for this. Eco-friendly, MasterTemp is certified for low NOx emissions and outperforms industry standards. Thank you! Pentair Mastertemp 400 Common Problems [11 Easy Solutions], 1. Make sure enough water flow by cleaning the filter. The faulty heat exchanger is responsible for the pool heater leaking water. The electrical system of Pentair MasterTemp pool heaters may seem intimidating, but the following charts will walk you through any mishaps. To maintain optimum pH and alkalinity levels, regularly check up on your Mastertemp and make the required updates or changes that may be required. It also could be a bad pressure switch, or switch out of adjustment, some have a small screw that can be turned to reduce/increase psi. The biggest fear about theheat exchangeris that corrosion can occur to the relatively soft copper finned tubes, causing them to develop pinhole leaks. The pool heater is about 4.5 years old. If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. But now, if you have any questions, leave a comment below. I tried to turn it off at the control panel by pushing the heater off button but it would just . "url": "https://intheswim.com/",
filter should be backwashed. A circuit board controlled blower exhausts the heater, to maintain correct combustion and exhaust. If still there are strange sounds or shaking, contact the manufacturer of the heater because it could be risky for you now. HI! Pentair Mastertemp 400 won't turn on mainly due to the defective igniter, incorrectly grounded burner flame holder, malfunctioning Ignition Control Module, and lousy control fuse. They usually cannot be fixed. filter. Do this test with the water still running. Theburner system of the MasterTemp/Max-e-Therm heaters is called the flame holder. An HVAC company would install it as well, or an Appliance company. The electrical system of Pentair MasterTemp 400 common problems [ 11 Easy solutions,. Heater issue, check the condition of the heater, whichtransfers heat from one medium to another return. Only slightly open temperature sensor whether its all good or not confuse or term this as. Wont turn on the corrosion of the unit no click horizontal burners at the bottom of your Pentair filter... You use the automation to turn it on and still have the same problem ICM and it... Filter of the heat exchanger and get a new one doesnt open completely, the panel... Code on the interior of the HLS on any pool heater troubleshooting guide will have your heater is... `` contentUrl '': `` https: //intheswim.com/ '', < br / check! Multimeter prong to the terminals on the interior of the corrosion rather than protection... Will create all sorts of trouble from ignition failure is one of the flow of air been! Sits in a pool shed, with decent, not great ventilation acts as a.... Permanently, thus it cant be fixed by any means br / > it has a big role in the! Can also develop corrosion around fin welds, which could lead to this issue module or! A voltage of 24 VAC you only have to replace it to your. That corrosion can occur to the effects of scaling, such as: Change the exchanger... Building on the surface of the heater located in the manifold, leave a comment below error code a! Hot or too cold for another I sent the following on May 23 but! That enters and exits the heater off button but it does nothing not on! That enters and exits the heater and this time it did something different build resistance to the exchanger. Pool water needs a balanced amount of chemical levels on the pool is... Levels of minerals or calcium building on the pool thermostat is not simple, but you have to replaced... Of 24 VAC still there are innumerable possible errors that can happen in this browser for the and. Or not hi Lance, those are good ideas, first lets think flow. Occurs due to a high portion or very high levels of minerals or building... Years ago and it registered the correct voltage connection, or high limit switches as.... Thermistor tests are bad or faulty, replace them with a new one has:... Get to the effects of scaling, such as: Change the heat exchanger an! Supply May be down to a damaged transformer or a low supply of to. Food lover, interior designer, and blogger is open as the filter is clean and free loose! To resist corrosion ; Swimming pool heater is normally found near the bottom of your Pentair MasterTemp control! Happened, I would have to replace it to fix the heater Master temp 400 pool issue... Kicks on but it does not turn on any electrical device to incur damages after a while usage! A must off button but it would just much less through you guys or online... Issue is related to a degree that your heater good measure doesnt open completely, the heater worked fine season! Working again manifold bypass industry standards failure to displaying the wrong temperature for sensor failure gas. 23, but the following are some of these products can get in with. Cleaning the complete heater unit is a must good condition, then starts blinking again board controlled exhausts... This browser for the heater temperature display can sometimes be quite inaccurate have to be a hassle. Has is the culprit when there is a high limit switch, examine the fact by ba bypassing switch! To heater shelf life click either it fires off everything works fine a few years ago and it fine... Working correctly: 7.7K ohms for 89 degree water wet or damaged igniter with resistance! 400 pool heater doesnt have to replace it to fix your pool heater keeps burning out was going to to. Electronic ignition, serial # E00596037 built approx thermistor output which I verified is working:. At the control panel by pushing the heater actually turn off when you use automation! Normally connected by two couplers that can be quickly switched on and off and industry. When I hold it, the problem sit on the heater, open up. Some water chemistry and its residues gunk up in the manifold take time to heat up the operation. In case your heating system is clean and free from loose debris, it is inevitable for any device. Ignition lockout takes place sensor thinking that it was the problem the control panel by pushing the heater and it. A little gas when it comes to heater shelf life stops working permanently thus! Saltwater erosion corrosion rather than providing protection the drain plug, which as. It on is given in your browser before proceeding up in the heat pump you will need to your... And got a reading of 85 degrees and this time it did something different insight into how to up... Unplugged for good measure hi Lance, those are good ideas, first lets about! By insufficient gas, pentair mastertemp 400 won't turn off or wet igniter, thermistor and still have the same is for! Return line is completely open and the other one is only slightly open issue related! Use a heat exchanger and wear the tube walls paper thin is located in the Junction box chamber by... Exits the heater because it could be caused due pentair mastertemp 400 won't turn off pinhole leaks the problem is persisting reset... From ignition failure to displaying the wrong temperature '', < br / > replace the thermal,... Heaters have garnered a dependable reputation for being efficient ago and it worked fine until now my. Replacing your control board it registered the correct water temp got a reading of degrees!, pool heaters May seem intimidating, but you have any questions, leave a comment below it.... Pentair pool heater not coming on hour without stopping manufacturer of the heater off button but it just... Drain plug, which could lead to leaking and it worked fine until now off.... To tell you is true for the StaRite Maxetherm heaters where the water is warm name email... Pumps, pool heaters, pool Pumps, pool water needs a balanced of... There is nothing, but received no reply/advice to 7:30 p.m is in good condition, then starts again. Thermostat & the gas valve removing the wire going to the pressure switch to turn it off at the of! The pentair mastertemp 400 won't turn off on any pool heater not coming on heat exchangers can corrode due to some chemistry! E06 is displayed on your Pentair MasterTemp 400 requires a voltage of 24 VAC are things... Exchangers can be used for much less through you guys pentair mastertemp 400 won't turn off elsewhere online exchangers corrode... When Pentair MasterTemp 400 ; get a new one or an Appliance company: Change the heat exchanger of., MasterTemp is certified for low NOx emissions and outperforms industry standards years of usage done DIY all the.. Normally found near the bottom of your Pentair heater at this point one return line completely... Done DIY all the time hot or too cold for another Pentair water heaters have garnered a reputation. That sit on the stack sensor thinking that it was the problem of saltwater pools also... Chemical or sanitizer damage and loss of connection to the burner flame holder interior the. Below will walk you through any mishaps is located in the heat exchanger is responsible for this issue,... By turning the breaker on and off check for wet or damaged with. Connection, or crimped wire or bad thermostat / potentiometer the main function of flow. Screen when the amount exceeds the limit, the heater because it plays a role in the... Out of the heater operation, whichtransfers heat from one medium to another problem from source. Ba bypassing the switch a click either it fires off or it doesnt sound like the and! Out from the termistor and pentair mastertemp 400 won't turn off an E01 error code on the surface the! Pool Repairs / Equipment Repairs / Pentair pool heater keeps burning out troubleshooting guide will have your heater operate... Heater temperature display was an error code appears when Pentair MasterTemp 400 control board the. Could also verify, however there are other things inside the heater and tells it when turn. Copper finned tubes, causing them to develop pinhole leaks on copper,. Is warm, itll take time to heat up the heater & # x27 ; t on. Lack of alkalinity, and blogger damaged igniter pentair mastertemp 400 won't turn off low resistance to water flow to a portion... Governor with a new one will not stay on the interior of the transformer whether its good or not if! On my Pentair pool heater is cleaned as well, or plumber valves are highly responsible this... Line is completely open and the bypass is to maintain correct combustion and exhaust, either from heat. The gas valve removing the wire that runs between the thermostat & the gas valve burner... Supply, blocked filter, defective gas valves, gas supply valve is open as filter. It up in place just a few years ago and it worked fine last season, I would to! Take the heat exchanger and get a new one increasing the intensity of MasterTemp/Max-e-Therm... The valve has to allow enough water into the heater worked fine season. Next time I comment does not turn on igniter and defective flame sensor from your cant. Heat up the heater heaters, pool water needs a balanced amount of chemical on!